iFixit has shared its full teardown of the new Mac Pro, calling it "beautiful, amazingly well put together, and a masterclass in repairability."
Given its modular design, the new Mac Pro unsurprisingly earned a nearly perfect repairability score of 9/10, with iFixit noting that basic repairs and upgrades can be performed with standard tools or even no tools at all. Major components also use industry-standard sockets and interfaces.
From a repair standpoint, the only downside is that while the SSDs are modular, they are not user replaceable since they are tied to the Apple T2 security chip. If you need to remove and replace the SSD modules, a support document says to contact Apple or an Apple Authorized Service Provider instead.
iFixit also has a service manual for the new Mac Pro.
Source: Macrumors